Ophthalmic mounting



De. 18, 1934. ARI R BRQWNlNG 1,984,914

OPHTHALMIC MOUNTING Filed Aug. 1o, 1952 INVENTOR Patented Dee. 1.8, 1934 1,984,914

l -,lMJN1Ti=.;Dk STATES PATENT [o1-rice Ralph R. Browning, Southbridge, Mass.,kasysignor to Americanv Optical Company, Southbridge, Mass., a voluntary association of Massachusetts f Application August 105.1932, Serial No. 628,194` V t i 2 claims. (C1. 2-14y v' Y y v v This invention relates to ophthalmic mount- Fig. Vis atransverse sectional-.view of the ings and has particular reference to aviators upper wall and ofthe outer eye cup,showing anprotection rgoggles and the like. othermodification; l

One of the principal objects of the invention Fig. VI isa partial front view of a goggle eye 5* is to provide for the eye cups of goggles a venticup embodying aifurther modication. I 5^ lator which will be operated by air currents. Fig. VII. isa planview ofthe structure shown Another object of the invention is to provide in Fig. VI. `f 4 l Y y simple, efficient and economical means for ven- Itis well known thatbecause ofthe highv speed tilating the interior ofthe eye cupsautomatatlwhich aviators travelthro'ugh thev air, strong cally through the wind pressure exerted by the wind pressure is exerted against their goggles, 10`

motion of the wearer through the air. making it necessary to fit the goggles'very close Another object of the invention is to provide to the face. y It is therefore essential that the for the eye cups of goggles a ventilator oper-v eye cups of the goggles'alwaysjbe ventilated to ated by aircurrents, which will cause a partial prevent the lenses from Abecoming steamed or' 15- vacuum to be created within the eye cups.l fogged. The ventilation devices in use'at present l5 Another object of the invention is to provide have'been found to be expensive and to add confor the eye cups of goggles a ventilator opersiderably to the cost of manufacture of the gogated by air currents, which will cause a partial gles. It is,'therefore, an object of this invenvacuum to be created within the eye cups retionl to provide an improved Ventilating device l gardless of the direction in which the wearer is for goggles foraviatorsfand the like, which will 20" looking. y be simpler; and' more economical to manufacture YAnother object of the invention is'to provide than the devices of the'prior art, andwill at the for the eyecups of goggles a ventilator j opersame time meet all` requirements of properly ated by air currents, which will not allowjair ventilatingthe eye cups.

to be blown directly into the eye cups VViegard- It is alsoan object ofy this invention to provide 2K5 less of the direction in which the wearer is an improved face contacting member which may looking. be more 'easily attached to the goggle eye cups Another object of the invention is to provide in theproper position and which will be more efrimproved face contacting means for goggles for cient in fuse lthan'ithe face contacting memaviators or the like. f 1 bers employed inthe prior 'art.j 30l Another object is Ito provide ai readily de- ,Referring more particularlyto the "drawing tachable face contacting member for goggles of wherein similarreference characters denote cor-V this type, in which the parts surrounding thev responding` parts throughout; vthel goggles em-v respective eyes will always be maintained in bodying the inventionv comprise a pairof lenses n proper alignment with.` respect to eachother. y, 1`,'which are 'carried in the eye cup frames2 and 35` Other objects and advantages of the inventionA connectedy by aV bridge' member 3, the goggles will become apparent from the following de#y being held in place on the face by the headbands scription taken in connection with the accom-l 4. y' The eye'cups ZareV provided with a soft, repanying drawing, and it will be apparent that silient face` contacting member v5, preferably vof 40 many changes in the details of construction and' soft rubber or other yielding material. This 40 arrangement of parts maybemade without de-v member 5. is shown formed all in one piece alparting from the spiritl of the invention as exthough it 'is attached separately to the respecpressed in the appended claims. I, therefore, do tive eye cups,jasjwill be hereinafter described. not wish to be limited to the exact dtails of The frames 2`and the face contacting member, construction and arrangement shown, the pre- 5 are shaped lin general contour topthat of theI 45' ferred form only having 'been shown by way of orbital arches of the'wearersface.l The framesV illustration. Y 2 are comprised each of two members, an out# Referring to thedrawing: side eyecup member 6 which has a front `flange Fig. I:I is a front view of a pair of goggles emor lens 'retaining seat 7 and 'a removable vinner y A bodyingv the invention; eyecup'member 8,whichis spaced lfrom the youter- 50vr Fig. II is a fragmentary plan view of Fig. I; eye cup' 6.-` -'Between the eye cups 6 land 8 are' Fig. III is a section on line III-III of Fig. 1I projecting portions 9 of the resilient face conlooking in the direction of the arrows; tasting member 5. The projections 9 of the Fig. IV is a partial sectional view similar to member 5 are preferably secured to the inner eye Fig. III, showingamodiflcation; cup members 8 by sewing or the like. The 55 purposes of this specification and the appended their upper sides are formed the projecting members 15. These members 15 are preferably frustro-conical because this form has been found-l to produce better results than other shap.es, ,and may be formed by punching outwardly through the walls of the frames 6,. as, shown in Fig. IIL` or may be separate hollow frustro-conical mem-v bers 16 soldered or otherwise secured to` the eye cups over openings in the frames as shown in Fig. IV. The openings at the outer ends of these members 15 are shown as being disposed sub-` stantially at right angles to the normal direction of air flow. The sloping sides of the conical members may be formed with straight elements, in which there are truly frustro-concal surfaces, or they may be formed with elements slightly concave or convex in which case they are not ofv course truly frustro-conical surfaces. For the claims, however, the term frustro-conical "1S to include all such variations. In any event, these sloping surfaces serve to direct air outward and across the opening, thus causing more ail` to pass over the opening than if the sides were notslop.-

ing.

The openings 12 and 13 in the inner eyecups 8 are so placed that when the frames are assembled they will be in staggered relation with the members 15 and the openings 14 respectively, in the outer frame 6. This will prevent any air from entering the eye cups directly. It will be noted also that the projection 9` of the member 5 is cutaway at 171 adjacent the openingsv 1.2, 13,

1 4jand. 15.. atthe top and bottom of the eyefcups, so that the air can circulate freelybetween the openings.

Itr will be apparent that air tending to` exhausty theV air 'from the inside, of

the eye cups 2. This in turn tends. toA suckfthe air into the eye cups 2 through. thefop'e'ni-ngs 13,v and 14, thus causing a. constant ventilationl through the eye cups 2, which will.` prevent-fog ging and steaming ofthe lenses.

It will be noted. that as the, franemembrsg.. are curved the` members 15, will-not all. project the same direction but` will project at. different angles. This insuresV ventilation at alltirnes, np.

matter in which direction the wearer isl looking. v

Even if some of. the openings 15. should.; be' directly toward the wind and air vshould enter the space 17 between the frames 6 and 8 the. air rushing overthe other memberswhichare, at different angles than the one vthrough whichthe. air;

could enter the 'eye cup.Vv

enters, would suck this air out aga-inQbefore itI In Figure V there. is shown modification.. similar to the vconstruction-of.` Eigf, III! but differ-- ing therefrom in'that the front, l-,8-ofthe cono The outer frames 6 have on., their lower sides a series of openings 14 and at `member 5.

rushing ,over the.` upper ends of the members lzwillcause azsuctio-n..

member forms a much more acute angle with respect to the eye cupl wall than the rear surface 19. It will be noted that the rear surface 19 is shown almost at right angles tothe eye cup wall. The side walls of these conical members are sloped substantially the same as those illustrated in Fig. III. It will readily be seen that the rear surface l9rdoes not need to be sloping because the air currents:` cannot come from the rear on account of the faceoof the wearer and the Making this surface more nearly perpendicular to the eye cup wall makes it possible for; theA front. surface 18 to be given a greater slope. y

In Figures VI" and'VIlthere is shown a further modification in which the frustro-conical member 2O has a series of spirally arranged tapering grooves Z'Ileading from its base to its opening in its outer end. These grooves serve to more positively direct the air outwardly and past the opening to increase the ventilatingeifect. `rThe spiral arrangement of these grooves tends .to givethe air a whirling motion; and thusregulaterits action in Ventilating thev eyecup. The tapering of thegrooves produces a nozzle effect at the openings. and thus increases the Ventilating action ley-causing the airto.` rush past the openings with a greater velocity. d

From the foregoing it! will beV seen that I have provided simple, efficient and economical means for Ventilating the eye cups of eye protectors by using the air currents.acrossthernto cause air to be, drawn out of the eye cupsand also that, I have provided. a face contacting means which is in one integral piece and shaped to the contour of both orbital brims, whereby the portions surrounding they respective eyes will always be main--V tained` in the proper alignment with respect to each other. v

The Ventilating means described is easy to construct, costing much less than the more complicated` devicesl in present use. Testsy have 'proved them just as effective irr every respect from a ven,-

tilationstandpoint asv previously known types,`

and much `more rugged.

, Having. describedrny invention, I claim: 1. In a device of the type described, a goggle eye cup, the rwall of said eye cup having an openwardly'fromfthe Wall of. said cup 4substantially.-A

normal thereto, said 4means having an opening therethrough communicating. withthe ,air on one side and with theinteriorof .the cupvr on. thel other-, said yent WaIlsbei-ng inclinedV outwardly toward thefair side of thev open-ing therein and arranged so thatair` rushing upwardly of the incline and past the outer opening will cause air to be drawn from the intericrof the eyecupthrough saidvent., 

